Purpose: The aim of this study was to assess the capabilities ChatGPT-4.0 and ChatGPT-3.5 for diagnosing corneal eye diseases based on case reports compare with human experts. Methods: We randomly selected 20 cases including infections, dystrophies, degenerations from a publicly accessible online database University Iowa. then input text each description into asked provisional diagnosis. finally evaluated responses correct diagnoses, compared them diagnoses made by 3 specialists (human...

To determine the prevalence of dry eye syndrome in general 40- to 64-year-old population Shahroud, Iran.Population-based cross-sectional study.Through cluster sampling, 6311 people were selected and 5190 participated. Assessment was done a random subsample 1008 people.Subjective assessment for performed using Ocular Surface Disease Index questionnaire. In addition, following objective tests employed: Schirmer test, tear break-up time, fluorescein Rose Bengal staining Oxford grading...

To determine the mean angle kappa and its determinants in population of Tehran, Iran.In a cross-sectional survey with random cluster sampling, total 442 participants aged >14 years were selected from 4 municipality districts Tehran for Orbscan acquisitions. Exclusion criteria history eye surgery refractive errors, cataract or glaucoma, use topical medication any type contact lens at time study. Mean different age gender groups association other factors was assessed. Considering high...

Self-medication is described as the use of drugs without a physician's prescription to treat self-recognized illness or symptoms, and an important health issue among elderly. Despite wide range different definitions, recognizing all forms self-medication older adults, particularly, in developing countries, help healthcare professionals providers reduce harmful effects self-medication. The purpose this study describe practice its related factors elderly people Iran based on experiences who...

ABSTRACT Introduction Assessing the capabilities of ChatGPT-4.0 and ChatGPT-3.5 for diagnosing corneal eye diseases based on case reports compare with human experts. Methods We randomly selected 20 cases including infections, dystrophies, degenerations, injuries from a publicly accessible online database University Iowa. then input text each description into ChatGPT3.5 asked provisional diagnosis. finally evaluated responses correct diagnoses compared three cornea specialists (Human experts)...

PURPOSE: To determine the agreement in central corneal thickness (CCT) measurements between gold standard method of ultrasound (US) pachymetry (UP-1000, Nidek) and 2 noncontact systems based on Scheimpflug imaging (Pentacam, Oculus) scanning-slit topography (Orbscan II, Bausch & Lomb) myopic eyes before after laser refractive surgery. SETTING: Noor Vision Correction Center, Tehran, Iran. METHODS: In this prospective study, 30 consecutive patients having surgery for myopia were enrolled. All...

PURPOSE: To determine the agreement between scanning slit topography (Orbscan II, Bausch & Lomb) and Scheimpflug imaging (Pentacam, Oculus) in corneal elevation, curvature, anterior chamber depth (ACD) measurements before after laser refractive surgery for myopia to compare postoperative changes seen with these devices. SETTING: Noor Vision Correction Center, Tehran, Iran. METHODS: In a prospective observational case-series study, 23 consecutive myopic patients having were examined Orbscan...

Purpose: To evaluate the change in corneal stiffness after small incision lenticule extraction (SMILE), femtosecond laser-assisted situ keratomileusis (FS-LASIK), and photorefractive keratectomy (PRK). Methods: Age, gender, spherical equivalent, central thickness (CCT)–matched cases undergoing SMILE with a 120-µ cap, FS-LASIK 110-µ flap, PRK were enrolled. One-year stress–strain index, parameter at first applanation, integrated inverse radius, deformation amplitude ratio 2 mm, 1 mm compared...

This study aimed to evaluate the effectiveness of an innovative platform (the Bilateral Corneal Symmetry 3-D Analyzer - BiCSA) and a novel corneal symmetry index Volume Between Spheres – VBS) in differentiating normal corneas from those with keratoconus. Pentacam imaging data 30 healthy keratoconus cases were analyzed. BiCSA was utilized determine VBS for each case. Statistical analyses included comparing mean values between groups assessing sensitivity, specificity, positive predictive...

To determine the mean corneal diameter and its determinants in population of Tehran.From Tehran Eye Study participants who were sampled through a stratified cluster approach, those first 4 municipality districts selected, after applying inclusion exclusion criteria, 399 right eyes 401 left 410 people aged 14 years older examined with Orbscan II. The was defined as horizontal limbus-to-limbus distance. Linear regression used to detect separate multiple correlations. design effect sampling...

Purpose: To determine the distribution of corneal thickness at 6 different points in an Iranian population and find any possible relationship between values some independent variables. Methods: As part “Tehran Eye Study,” 410 people (800 eyes) aged 14 years older, residing first 4 municipality areas Tehran, were selected through a stratified random cluster sampling method. The participants examined with Orbscan II to measure central, thinnest, peripheral cornea. In addition, relationships...

Purpose: To determine the prevalence rates of refractive errors in elderly people Mashhad, Iran. Methods: In a cross-sectional study with cluster sampling method, sample population was selected proportionate to total Mashhad. The citizens were then invited for eye examinations at clinic. After an interview, data collected using objective and subjective refractions. Refractive error converted into spherical equivalent (SE), myopia defined as SE worse than -0.50 diopters (D) hyperopia +0.50 D....

Purpose: To determine the distribution of central and peripheral corneal thickness values its determinants in an Iranian population. Methods: This population-based study was conducted between 2009 2010 Shahroud, with a response rate 82.2%. Here in, we present data on 3890 participants study, which included all 40- to 64-year-old except those history ocular surgery. Measurements were done Pentacam, correlations age, gender, height, body mass index, refraction tested. Results: The mean age (±...

To determine 5-year changes in corneal curvature and asphericity a population-based cohort study of 40 to 64 year olds Iran.This report is based on data from the first second phases Shahroud Eye Cohort Study conducted 2009 2014, respectively. In this report, Pentacam 3749 people were used. Extracted variables included maximum minimum simulated keratometry readings (Kmax Kmin), mean radius sagittal (MRSC) central 3- 2-mm rings between 3 11 mm center, anterior posterior both phases. analysis,...

The aim of this study was to estimate the basic reproduction number (R0) COVID-19 in early stage epidemic and predict expected new cases Shahroud Northeastern Iran. R0 estimated using serial interval distribution incidence cases. 30-day probable cumulative were predicted assumption that daily follows a Poisson determined by infectiousness. Data analysis done 'earlyR' 'projections' packages R software. maximum-likelihood value 2.7 (95% confidence (CI): 2.1-3.4) for 14 days decreased 1.13 CI...

The introduction of different techniques and computerized devices into clinical ophthalmology has significantly improved our knowledge the eyes, optics, eye conditions. Today, corneal topography is performed with a wide range that implement variety techniques. Advance analysis systems provide us simple quick evaluation procedures, yet sophisticated data information generated can only be interpreted adequate system itself as well accepted normal ranges various properties assessed these...

To determine the number of cataract surgeries per million population year or surgical rate (CSR) in Iran for every from 2000 to 2005 as part objectives Vision 2020 initiative by World Health Organization (WHO) eliminate blindness.This study is Iranian Cataract Surgery Survey, which was conducted a retrospective cross-sectional study. All major surgery centers and 10% randomly selected minor throughout nation were approached. Excluding 2-week New Year holiday, 1 week season between (a total...

Purpose: To determine the mean corneal power, astigmatism, and irregularity in a sample from population of Tehran. Materials methods: Four hundred forty-two people residing first four municipality districts Tehran were selected through random stratified cluster sampling approach, 410 which met inclusion criteria enrolled study to have Orbscan II acquisitions between 9:00 am 7:00 pm. The values obtained for keratometry, studied. Results: keratometry reading was 44.39 diopter (D) [95%...